v0.509-alpha

• Added new marker type: Auto path node (automatically creates land, naval and amphibious path markers)
• Importing stratum mask files from *.raw and *.bmp file
• Exporting stratum mask files as *.raw
• Visibility of stratum layer ("V" / "H" button)
• Move stratum layer up/down
• Fixed importing of heightmap *.raw file, added *.bmp format support
• Fixed exporting of heightmap
• New Decals rendering (deferred rendering + gpu instancing)
• Fixed water realtime reflections
• Fixed crash when creating new map